<?php

/*
  -------------------------------------------------------------------------
  Credits: Bit Repository
  URL: http://www.bitrepository.com/web-programming/php/download-image.html
  -------------------------------------------------------------------------
 */

class GetImage {

    var $source;
    var $save_to;
    var $set_extension;
    var $quality;

    function download($method = 'curl') { // default method: cURL
        $info = @getimagesize($this->source);
        $mime = $info ['mime'];

        /*
          if (!$mime)
          exit('Could not obtain mime-type information. Make sure that the remote file is actually a valid image.');
         */

        // What sort of image?
        $type = substr(strrchr($mime, '/'), 1);

        switch ($type) {
            case 'jpeg' :
                $image_create_func = 'ImageCreateFromJPEG';
                $image_save_func = 'ImageJPEG';
                $new_image_ext = 'jpg';

                // Best Quality: 100
                $quality = isSet($this->quality) ? $this->quality : 100;
                break;

            case 'png' :
                $image_create_func = 'ImageCreateFromPNG';
                $image_save_func = 'ImagePNG';
                $new_image_ext = 'png';

                // Compression Level: from 0  (no compression) to 9
                $quality = isSet($this->quality) ? $this->quality : 0;
                break;

            case 'bmp' :
                $image_create_func = 'ImageCreateFromBMP';
                $image_save_func = 'ImageBMP';
                $new_image_ext = 'bmp';
                break;

            case 'gif' :
                $image_create_func = 'ImageCreateFromGIF';
                $image_save_func = 'ImageGIF';
                $new_image_ext = 'gif';
                break;

            case 'vnd.wap.wbmp' :
                $image_create_func = 'ImageCreateFromWBMP';
                $image_save_func = 'ImageWBMP';
                $new_image_ext = 'bmp';
                break;

            case 'xbm' :
                $image_create_func = 'ImageCreateFromXBM';
                $image_save_func = 'ImageXBM';
                $new_image_ext = 'xbm';
                break;

            default :
                $image_create_func = 'ImageCreateFromJPEG';
                $image_save_func = 'ImageJPEG';
                $new_image_ext = 'jpg';
        }

        if (strlen($type) < 3 || empty($type)) {
            $image_create_func = 'ImageCreateFromJPEG';
            $image_save_func = 'ImageJPEG';
            $new_image_ext = 'jpg';
        }

        if (isSet($this->set_extension)) {
            $ext = strrchr($this->source, ".");
            $strlen = strlen($ext);
            $new_name = basename(substr($this->source, 0, - $strlen)) . '.' . $new_image_ext;
        } else {
            // $new_name = basename($this->source);
            $new_name = md5(time()) . '.jpg';
        }

        $save_to = $this->save_to . $new_name;

        if ($method == 'curl') {
            $save_image = $this->LoadImageCURL($save_to);
        } elseif ($method == 'gd') {
            $img = $image_create_func($this->source);

            if (isSet($quality)) {
                $save_image = $image_save_func($img, $save_to, $quality);
            } else {
                $save_image = $image_save_func($img, $save_to);
            }
        }

        return $save_image;
    }

    function LoadImageCURL($save_to) {
        $ch = curl_init($this->source);
        $fp = fopen($save_to, "wb");

        // set URL and other appropriate options
        $options = array(CURLOPT_BINARYTRANSFER => 1, CURLOPT_RETURNTRANSFER => 1, CURLOPT_FILE => $fp, CURLOPT_HEADER => 0, CURLOPT_FOLLOWLOCATION => 0, CURLOPT_TIMEOUT => 180); // 1 minute timeout (should be enough)

        curl_setopt_array($ch, $options);

        $save = curl_exec($ch);
        curl_close($ch);
        fclose($fp);

        return $save;
    }

}

function save_image($url, $saveto) {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
    $raw = curl_exec($ch);
    curl_close($ch);
    if (file_exists($saveto)) {
        @unlink($saveto);
    }
    $fp = fopen($saveto, 'w+');
    fwrite($fp, $raw);
    fclose($fp);
    return $saveto;
}

?>